MediaScanner.cpp revision 7188e55f54a43c55fd6b96454720c447f1dc454e
1413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber/* 2413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * Copyright (C) 2009 The Android Open Source Project 3413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * 4413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * you may not use this file except in compliance with the License. 6413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * You may obtain a copy of the License at 7413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * 8413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * 10413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * Unless required by applicable law or agreed to in writing, software 11413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * See the License for the specific language governing permissions and 14413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * limitations under the License. 15413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber */ 16413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 171629399bb578fc176613ccaf134d1be6e3047638Andreas Huber//#define LOG_NDEBUG 0 181629399bb578fc176613ccaf134d1be6e3047638Andreas Huber#define LOG_TAG "MediaScanner" 191629399bb578fc176613ccaf134d1be6e3047638Andreas Huber#include <utils/Log.h> 201629399bb578fc176613ccaf134d1be6e3047638Andreas Huber 21413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber#include <media/mediascanner.h> 22413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 23413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber#include <sys/stat.h> 24413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber#include <dirent.h> 25413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 26413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Hubernamespace android { 27413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 28413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas HuberMediaScanner::MediaScanner() 29413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber : mLocale(NULL) { 30413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 31413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 32413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas HuberMediaScanner::~MediaScanner() { 33413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber setLocale(NULL); 34413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 35413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 36413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Hubervoid MediaScanner::setLocale(const char *locale) { 37413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (mLocale) { 38413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber free(mLocale); 39413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber mLocale = NULL; 40413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 41413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (locale) { 42413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber mLocale = strdup(locale); 43413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 44413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 45413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 46413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberconst char *MediaScanner::locale() const { 47413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber return mLocale; 48413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 49413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 507188e55f54a43c55fd6b96454720c447f1dc454eJeff BrownMediaScanResult MediaScanner::processDirectory( 517188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown const char *path, MediaScannerClient &client) { 52413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber int pathLength = strlen(path); 53413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (pathLength >= PATH_MAX) { 547188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return MEDIA_SCAN_RESULT_SKIPPED; 55413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 56413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber char* pathBuffer = (char *)malloc(PATH_MAX + 1); 57413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (!pathBuffer) { 587188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return MEDIA_SCAN_RESULT_ERROR; 59413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 60413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 61413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber int pathRemaining = PATH_MAX - pathLength; 62413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber strcpy(pathBuffer, path); 633e42b4491529975f771f8d71f931e24e120a7856Kenny Root if (pathLength > 0 && pathBuffer[pathLength - 1] != '/') { 64413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber pathBuffer[pathLength] = '/'; 65413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber pathBuffer[pathLength + 1] = 0; 66413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber --pathRemaining; 67413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 68413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 69413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber client.setLocale(locale()); 70413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 717188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown MediaScanResult result = doProcessDirectory(pathBuffer, pathRemaining, client, false); 72413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 73413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber free(pathBuffer); 74413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 75413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber return result; 76413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 77413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 787188e55f54a43c55fd6b96454720c447f1dc454eJeff BrownMediaScanResult MediaScanner::doProcessDirectory( 797188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown char *path, int pathRemaining, MediaScannerClient &client, bool noMedia) { 80413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // place to copy file or directory name 81413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber char* fileSpot = path + strlen(path); 82413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber struct dirent* entry; 83413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 84462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood // Treat all files as non-media in directories that contain a ".nomedia" file 85413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (pathRemaining >= 8 /* strlen(".nomedia") */ ) { 86413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber strcpy(fileSpot, ".nomedia"); 87413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (access(path, F_OK) == 0) { 88767ad02b2ca9e6ad02b8cf56098cffad52970642Dianne Hackborn LOGV("found .nomedia, setting noMedia flag\n"); 89462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood noMedia = true; 90413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 91413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 92413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // restore path 93413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber fileSpot[0] = 0; 94413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 95413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 96413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber DIR* dir = opendir(path); 97413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (!dir) { 987188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown LOGW("Error opening directory '%s', skipping: %s.", path, strerror(errno)); 997188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return MEDIA_SCAN_RESULT_SKIPPED; 100413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 101413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 1027188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown MediaScanResult result = MEDIA_SCAN_RESULT_OK; 103413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber while ((entry = readdir(dir))) { 1047188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (doProcessDirectoryEntry(path, pathRemaining, client, noMedia, entry, fileSpot) 1057188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown == MEDIA_SCAN_RESULT_ERROR) { 1067188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown result = MEDIA_SCAN_RESULT_ERROR; 1077188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown break; 108413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 1097188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown } 1107188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown closedir(dir); 1117188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return result; 1127188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown} 113413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 1147188e55f54a43c55fd6b96454720c447f1dc454eJeff BrownMediaScanResult MediaScanner::doProcessDirectoryEntry( 1157188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown char *path, int pathRemaining, MediaScannerClient &client, bool noMedia, 1167188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown struct dirent* entry, char* fileSpot) { 1177188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown struct stat statbuf; 1187188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown const char* name = entry->d_name; 1197188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown 1207188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // ignore "." and ".." 1217188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (name[0] == '.' && (name[1] == 0 || (name[1] == '.' && name[2] == 0))) { 1227188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return MEDIA_SCAN_RESULT_SKIPPED; 1237188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown } 1247188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown 1257188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown int nameLength = strlen(name); 1267188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (nameLength + 1 > pathRemaining) { 1277188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // path too long! 1287188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return MEDIA_SCAN_RESULT_SKIPPED; 1297188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown } 1307188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown strcpy(fileSpot, name); 1317188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown 1327188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown int type = entry->d_type; 1337188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (type == DT_UNKNOWN) { 1347188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // If the type is unknown, stat() the file instead. 1357188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // This is sometimes necessary when accessing NFS mounted filesystems, but 1367188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // could be needed in other cases well. 1377188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (stat(path, &statbuf) == 0) { 1387188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (S_ISREG(statbuf.st_mode)) { 1397188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown type = DT_REG; 1407188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown } else if (S_ISDIR(statbuf.st_mode)) { 1417188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown type = DT_DIR; 142413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 1437188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown } else { 1447188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown LOGD("stat() failed for %s: %s", path, strerror(errno) ); 145413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 1467188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown } 1477188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (type == DT_DIR) { 1487188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown bool childNoMedia = noMedia; 1497188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // set noMedia flag on directories with a name that starts with '.' 1507188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // for example, the Mac ".Trashes" directory 1517188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (name[0] == '.') 1527188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown childNoMedia = true; 1537188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown 1547188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // report the directory to the client 1557188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (stat(path, &statbuf) == 0) { 1567188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown status_t status = client.scanFile(path, statbuf.st_mtime, 0, 1577188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown true /*isDirectory*/, childNoMedia); 1587188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (status) { 1597188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return MEDIA_SCAN_RESULT_ERROR; 160413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 161413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 1627188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown 1637188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // and now process its contents 1647188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown strcat(fileSpot, "/"); 1657188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown MediaScanResult result = doProcessDirectory(path, pathRemaining - nameLength - 1, 1667188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown client, childNoMedia); 1677188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (result == MEDIA_SCAN_RESULT_ERROR) { 1687188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return MEDIA_SCAN_RESULT_ERROR; 1697188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown } 1707188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown } else if (type == DT_REG) { 1717188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown stat(path, &statbuf); 1727188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown status_t status = client.scanFile(path, statbuf.st_mtime, statbuf.st_size, 1737188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown false /*isDirectory*/, noMedia); 1747188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown if (status) { 1757188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return MEDIA_SCAN_RESULT_ERROR; 1767188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown } 177413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 178413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 1797188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown return MEDIA_SCAN_RESULT_OK; 180413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 181413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 182413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} // namespace android 183